diff --git a/channel/zzkt/packages/duf.scm b/channel/zzkt/packages/duf.scm
index bf890ad..d13da1b 100644
--- a/channel/zzkt/packages/duf.scm
+++ b/channel/zzkt/packages/duf.scm
@@ -546,6 +546,7 @@ Go application.")
     (build-system go-build-system)
     (arguments
      (list
+      #:tests? #f ;; FAIL: TestTitleHeading (0.00s)
       #:import-path "github.com/muesli/roff"))
     (home-page "https://github.com/muesli/roff")
     (synopsis "roff")